Process of making filled bags



June 15 `1926.

A. M. BATES.. IPRoCEss oF MAKING FILLED. BAGS4 2 'sheets-sheet 2 Filed July 15 Patented June 15,

xfnarns, or cmcaeo, rumors, assrenon Immers; a conrom'rron rm, or cnrcaco,

'ro nuns vaLvn BAG 'coxor wnsr lvmenna f rnocnss or 'tame nimm nos y 'appmauonlmea im 15,1925. sei-au No'. 4am.

.My invention relates to apro'cess Ifor pro- -ducing filled bags.' It has'particular reference to such process when concerned' with bag fabric vvor bags'of suchsize and fabric as l to make important ahem or'jfold in connection with one orboth of ,the bag end closures.- I l t f igure lisa diagrammatic side elevation of so much of an apparatus as may be lo yused toy illustrate my t side elevation 'of a bag tube. Fig. A3 is la side elevationl of af bag tube with folds Fig. 4 -is anenlargeddetailside view of yparts showing the filled bag with hemmed 16 closures. Fig. 5' is a, front'jview of the same.

Fig. 6 is adiagrammatic side elevation illustratinga modification of the filling Fig. 7 is a diagrammatic side elevatlon illustrating a modification of the closureforming step. Fig.. 8 is a diagrammatic face view of the closure, shown in Fig. 7, in course of formation. Fig. 9 is a view simiarlto Fig. 3, showing a modified form, of

o r v Like parts are indicated by the same letters in all figures. A is a roll of bag fabric, B is a' bag forming tube, C isl a closure de- `"ice such as a sewing machine to secure the edges of the `material together to form a 3 tube, D is a tube so formed. E and F are folds of the tube connected by the inner tube portion G and preferably with a spaceH between them. KK are closures formed by Athe seams whereb the folded portions of u the tube are attached together to form the hemmed top and bottom-closures of the bag. N is the line on which the tube is severed between these folds or seams to separate the finished bag from might be made by hand or by any suitable formin mechanism.` The fol the tue after .the bag has 'received its lcharge.

In Fig. 6 there is shown a tube D of anyl l' suitable vbag-forming material, which 1s passed downward around a float B sustained in the tube in any suitable manner.

Successive slits L of the tube at suitable intervals. These slits may be formed by cutting the tube wall between the top o a tubu ar rtion of oat B and the bottom of afee spout P, or theymay be formed previously suitable manner.

' charge of material is passed from the l process. l Fig. 2 i's a 'in Stepj raround the forming tu h t Th f ld t e ube e o s"and the o eration repeated.

ds are made in are formed in the side inany.

feedl spout' through the ioat into'the tube 'while thev parts are in the position shown Iin F1g'.'6, andv then'the arts are moved 'to the'pos'ition shown in 7. Folds'EF are formed in the tube above the charge, connected by the tube portion G. Prefer' a`bly,the portion G includes the 'slit L Scams 'are sewed through folds EF by `needlesjM', as indicated diagrammatically Figs. 7 and 8, and severance of portion 05 .G is completedv between the. seams' by. a. cutter Nr. .r .I 1 l As `shown vin'FigsfG, 7 vandl 8, lon itudinal folds O are formed in the`- wall ofg the bag at. the ends kof the seam, and additionally '.70 vreinforce Ithes'eams at theends.' 'In Fig.` 9,'*a fold is shown like that shown 'inV Figs. `1 and 3 to 5, exceptthat the conportion G between the, folds E and F 1s on the outside of the tube instead of on ,thev inside thereof. l l

The use and operation ofmy inventionv as illustrated` in Fig. l are as follows.:l The bag fabric, printed or otherwise treated, has its two ed es rought together be. The sewing ma` chine joins these edges to form the tube, which is then reversed to brin the seam inside and passed down throug the forming tube. The folds are then formed at the lower end of such tube by hand or a fold producing device and the folds are 'seamed, preferably'the seams which close the bottom of the upper bag and the to ofthe lower bag being made simultaneous y and the fabric of the tube between them being severed to detach the lower filled ba A charge of material is then inserted in t e tube against i the end closure, the tube fed downwardly The material could be olded as many times as desired zfinldl the fabric could be severed through the The manner of forming the tube, the ma terial of the bag or charges, the manner of inserting the charges, and the form of the folds are not essential parts ofthis invention except as specified in the appended claims, and these and other disclosed features may be modified within the scope of the appended claims without departing from my invention.

One form of the invention was disclosed in myY prior application Serial No. 328,310, and inthe divlsion thereof, Serial N 0.-- 463,- 110 479, and this application is a continuationof those applications in so far as the subject matter is common.

What I claim is 1. The method of producing a filled bag from filling material and abag tube having a closed end, which consists in filling a charge of the material into' the bag tube with one end of the charge against the closed end of the tube, then forming a fold in the Walls of the tube adjacent the other end of the charge, then forming a tube closure through said fold, and severing the filled and closed bag from the tube, the severance following the formation ofthe fold.

2. The method of producing a filled bag from filling material and a bag tube having a closed end, which consists in filling a charge of the material into the bag tube with one'end of the charge against the closed end of the tube, then forming a fold in the walls of the tube adjacent the other 'end o the charge, then sewlng a tube-closing seam through said fold, and severing the filled and closed bag from the tube, the severance following the sewin of the seam.

3. Themethod o producing filled bags from filling material and a bag tube having a closed end, which comprises filling a charge of the material into the tube with one end of the charge against the closed end of theI tube. then fol ing the walls of Vcharge of the material into f of the tube,

the tube adjacent 'the other end of the char e, forming two tube closures throu h the olded tube walls, and severing the tu e between the closures, the severane following the formation of the closure.

' 4. from filling material and a bag tube having The method of producing filled bags a `closed end, which complrises` lling a charge of the material into t e tube with one end of the charge against the closedend of the tube, then folding the walls of the tube adjacent the other end of the charge, sewin two tube closin seams through the folded tube walls, an severing 4the tube between the seams, the severance following the sewing of the seams. l

5. The method of producing filled bags from filling material and a bag tube having a closed end, which comprises filling a the tube with one end of the charge against the closed end then forming two ltransverse parallel folds in the walls of the tube adjacent the other end of the charge, sewing two tube closing seams, one through each of said folds, and severing the tube between the seams; the severance following the sewing of the seams. f

vIn testimony whereof, I have hereunto signed my name to this specification.

ADELMER M. BATES. 

